| Sources of variations | Type III Sum of Squares | df | Mean Square | F | Significance |
| Corrected Model | 3.11 | 2 | 1.6 | 3.3 | 4.80E−02 |
| Intercept | 111 | 1 | 111.2 | 234.0 | 0.00E+00 |
| Substrate | 3 | 2 | 1.6 | 3.3 | 4.80E−02* |
| Error | 20 | 42 | 0.5 |
|
|
| Total | 134 | 45 |
|
|
|
| Corrected Total | 23.06 | 44 |